Dahlia is grown for its root. Its summer flowers are a moderate draw for honeybees, native bees, and butterflies, even though the root is the prize.
Score Dahlia on your exact land.
Zone averages can't see the slope, soil, frost, and sun that decide whether dahlia actually takes — and those shift from one yard to the next. Enter your address and we'll score dahlia against your land's real conditions.
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What Dahlia is
Dahlia reaches around four feet at maturity. It blooms in summer.
How to grow Dahlia
USDA Zones
Data pending
Soil pH
Data pending
Sun
Data pending
Growable Ground plant catalog
Drainage
Data pending
Growable Ground plant catalog
Mature Height
4 ft
Growable Ground plant catalog
Sow directly
Sow dahlia seed straight into the bed — root crops germinate fast and resent transplanting. Give them full sun.
Match the soil
Pull a soil test from your local Extension lab to confirm pH and drainage match dahlia's needs before planting.
Water steadily
Keep the root zone evenly moist through establishment. Match watering to the plant's drainage preference and your local rainfall.
Harvest at maturity
Pull while roots are young and tender — sweeter than oversized ones. Local Cooperative Extension guides publish timing tables.
Where Dahlia thrives
Whether dahlia thrives on a given site comes down to its soil pH, drainage, sun, and frost dates — the conditions that vary parcel to parcel.
What grows around Dahlia
Growing guides for dahlia
In rotation planning, dahlia counts as a Other — beds recover best when other crops don’t follow each other in the same spot year over year. (Growable Ground derivation — crop-rotation group from botanical family)
Related plants in perennial flower
Good to know
Good news for pet owners — dahlia isn't known to be toxic to dogs or cats. (Source: ASPCA.)
Dahlia offers moderate value to bees and other pollinators. (Source: Pollinator Partnership.)
Your land is one point inside Dahlia's range
This page resolves to the species. Your state page draws the county line, and a report reads the parcel — the soil pH, drainage, sun, and frost dates on your exact ground, which no species average can see.
See if Dahlia will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether dahlia actually takes — we score it against the real conditions at your address.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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How we know this about Dahlia
The figures above are cited per row, not per site: the pH band names this plant’s own source column, the three temperature figures each carry their own, and days-to-maturity cites the publication that actually lists it. All of it comes from the Growable Ground Plant Database — a compilation over FAO ECOCROP, USDA PLANTS, and university Extension sources, published openly with per-field provenance.
Grounded inUSDA PLANTS Database•USDA PHZM•ASPCA
Frequently asked questions
Can I grow Dahlia in my zone?
Zone data for dahlia is being finalized. A Growable Ground report checks your parcel's full suitability against federal soil, climate, and zone data.
When should you plant Dahlia?
Time dahlia to your own season rather than the calendar. Your local frost dates set the exact window — a Growable Ground report reads them for your address.
What soil does Dahlia need?
Specific pH data for dahlia is pending. A soil test from your local Extension lab confirms what your site needs.
Does Dahlia attract pollinators?
Yes — dahlia's flowers are a solid nectar source for honeybees, native bees, and butterflies. (Source: Pollinator Partnership.)
Is Dahlia safe for pets?
Dahlia is not known to be toxic to dogs or cats based on available data. Always supervise pets around new plantings. (Source: ASPCA.)